Improvement in bellows



UNITED STATES PATENT OFFICE.

GEO. WV. DALBEY, OF WHEELING, VEST VIRGINIA.

IMPROVEMENT IN BELLOWS.

To all whom it may concern:

Be it known that I, GEO. IV. DALBEY, ot Wheeling, in the county of Ohioand State of West Virginia, have invented a new and useful Improvementin Bellows; andI do hereby declare that the following is a full, clear,and exact description thereof, which will enable those skilled in theart to make and use the same, reference being to the accompanyingdrawings, forming part of this specification, in which- Figure l is avertical central section of' my invention, taken in the line w x, Fig.2. Fig. 2 is aside elevation of the same.

Similar letters of reference indicate corresponding parts.

y invention relates to certain improvements in that class of bellowsused by smiths and in smelting-houses, dac. 5 and it consists, first, inthe employment or use, in a suitableshaped box, of two diaphragms orplungers, which are composed of a center-piece of wood or metal,attached to the sides of the box by gutta-percha or leather 5 second, inthe use of a spiral spring applied to the upper plunger in such a manneras to give itareacting force after the upper chamber has been filledwith air; third, in the arrangement of a wheel suitably mounted on thebox, over which passes a chain or rope having one end secured to thepiston and the other to a suitable hand-lever for the purpose ofrendering the operation of inflating the bellows easy; fourth, in theuse of guttapercha for a packing around the partition between thereceiving and expelling chambers of the bellows; fifth, in theemployment of a weighted piston for operating the lower plunger of thebellows, in combination with the wheel and hand-lever.

To enable others to understand my invention, I will proceed to describeit.

A represents the box or casing of the bellows, which may be of anydesirable or proper shape. This box is divided into two compartments bya partition, B, as shown in Fig. 1. This partition is packed around itsedges with india-rubber or gutta-percha, so as to be perfectly air-tightwhere it connects or is secured to the sides of the box. Through thispartition there is made a hole, c, over or on the top of which there isarranged avalve, b, for closing the same to prevent any of the airpassing from the upper chamber back into the lower one, but to admit airto the said upper chamber from that below.

At a suitable distance from the top of the box I secure the upperdiaphragm or plunger, C. The said diaphragm consists of a weightedcenter-piece, o, having pieces of gutta-percha, india-rubber, leather,or other suitable material, d, attached to it all around and to the boxall around, the depth of the said pieces being enough to allow theplunger a sufficient play up and down to perform its work.

Above the plunger O there are arranged spiral springs e, (two or more,)which bear against the said plunger and against a cross-piece on top ofthe box after the upper chamber has been filled with air, therebyforcing the air out through the nozzle or tuyeref (see Fig. 2) in asteady and equal current. This is the mechanism for expelling the air.

In the lower part of the box A, I arrange the plunger D, for drawing theair into the lower or receiving chamber and forcing it up into the upperor expelling chamber. It consists of a center piece, g, connected withthe sides of the box in the same manner as the plunger C. The centerportion of this plunger has a hole made through it and a valve, h,placed over or on top of it for closing it, so as to prevent the egressof any air received from the lower or receiving chamber through the saidhole.

E z' jj F represent the device I denominate the piston. Its otliceis tooperate the lower plunger, D, ofthe bellows. This piston consists of twoupright pieces, i i, connected to the plunger and secured to across-piece, E, which has attached to it two sliding'rods,jj, one oneach side, which are connected together by a cross-piece, F, at the topof the box. A chain or rope, la, is attached to the cross-piece F andpassed over a wheel, G, which is arranged to work in suitable bearingsin or above the box A, and connected to a lever, H, suitably arrangedfor operating the whole contrivance. The lower part of the pistonarrangement is heavily loaded, so that it will descend as soon asreleased after being drawn up.

The operation is as follows The lever H is grasped by the hands andmoved up and down, which gives an oscillating motion to the pistonarrangement. rlhe piston forces up the plnn ger D, and as thelatterdescends the valve h opens and permits the lower or receivingchainber tobe lled with air. Now it ascends again, and the air thus compressed inthe receivingcham ber opens the valve b ot the partition and allows theair to rush into and till the upper or expellin chamber and to forceupward the plunger (J. So soon as the plunger D descends again the valveb closes, and the plunger O, which is weighted, and which is caused topress down upon the air inside the upper chamber by the spiral springsc, forces the air out through the tuyerefin a steady and continuousstream.

Bellows made according to my invention can be cheaply constructed andeasily operated, and they give aconstant and continuous blast,

which is of essential importance in smeltinghouses.

Having described my invention, whatI claim therein as new, and desire tosecure by Letters Patent, is-

'lhe combination and arrangement of the parts, consisting of the box A,with its perforated and valved partition, the valve-plunger D, weightedplunger G, and springs e, the motion being derived through the lever Hand frame E F i j, substantially as described and represented.

The above specification of my invention signed by me.

GEO..W. DALBEY.

Witnesses B. F. CALDWELL, JOHN A. MENGER.

